Note NOV2020: If you just copy/paste the last file '/Library/Preferences/.plist' as instructed above, it should work as well. /Library/PrivilegedHelperTools/.helper./Applications/Microsoft Office 2011 folder (copy the entire folder, with all its contents).To get there, in the Finder click Go->Computer->.then look for the following folders: Please note that you should be looking for these folders in the root directory of the drive on which OSX is installed- NOT in your user directory. To move / re-install your licensed copy of Microsoft Office 2011 for Mac on a different computer / OSX installation, and re-authorize it without the license / serial / key available, copy the following from the old machine to the corresponding (same) spot on the new computer. This thread is a bit old, but in case someone else finds themselves looking for the answer, this just worked for me:
